Portion of a ladder



FIG. 1 is a perspective view of a portion of a ladder, showing my newdesign;

FIG. 2 is a cross-sectional view thereof, taken generally along lines2--2 of FIG. 1;

FIG. 3 is a cross-sectional view thereof, taken generally along lines3--3 of FIG. 1;

FIG. 4 is a front elevational view thereof, the rear elevational viewbeing a mirror image thereof; and,

FIG. 5 is a left-side elevational view thereof, the right-sideelevational view being a mirror image thereof.

The broken lines showing a remaining portion of a ladder in FIG. 1depict environmental matter and form no part of the claimed design.

I claim the ornamental design for a portion of a ladder, as shown anddescribed.